In direct ELISAs, less than 2% cross-reactivity with recombinant human (rh) SULT1A1, rhSULT1A3, rhSULT1B1, rhSULT1E1, and rhSULT4A1 is observed. Reconstitute at 0.2 mg/mL in sterile PBS. SULT1 sulfotransferases exhibit N-sulfating activities of carcinoge